Very much agreed! Personally, I like it either the same tension for mains/crosses, or sometimes I actually up the crosses by 1 pound, so 39/40, or 38/39 worked great. Doing this seemed to help longevity just a bit. When I'd do 39/36, the strings would seem to lose control a lot quicker. I had also read somewhere that tighter crosses elongate the sweetspot more towards the tip, and I tend to hit up there between 10 & 2, rather than right in the middle between 3 & 9. However you prefer should be fine. Tour bite is a stiffer poly, so the tensions below 40 work nicely. I went as low as 31 lbs but control bailed at that point. 37-42 is my sweetspot for full poly tensions. Yes, my #2 setup is gut/poly, but I tend to string it between 56/53 and 61/60, depending on what poly and gut I'd use. My favorite setup if cost & time to string were irrelevant would be gut/poly but the cost and time to string pushed me to find a full poly setup. This way with poly I can string without the care required to prevent kinks (not that I'm a careless stringer, but gut does take some extra time and care, while getting more expensive lately). I also find tourbite to provide the 'all-out' control and confidence under pressure that gut/poly slightly lacks. TB 19 is also quite awesome, but longevity of a 1.10 string is short - need to string that one a few pounds higher, and is great for an 'important match' freshly strung. The lowest I went with gut/poly was 52/49, but the gut mains made it too powerful and springy. Yet with full poly those tensions can be a lot stiffer in the PT280/630. Short version: #1) full poly: 37-42 lbs mains, with crosses +1 to -3 lbs based on your preference for feel/sweetspot. #2) gut/poly: 56 to 61 lbs mains, with crosses same or down to -3 lbs based on prefs. You can try it lower but I did not like the gut below 56. Feel & power obviously are better with gut/poly; Spin is a close race; but pure control is where tourbite shines.